I have successfully claimed under the FCC "Delay Repay" but I think it was for the 17th rather than the 12thThere have been so many problems recently that I honestly can't remember which days were particularly bad !I received a letter with credit vouchers to spend on future journeys.

Although not a fan of FCC I have to say it was much easier to use their online system than the Greater Anglia version which requires you to fill in a form and post it to them.